Hi Jamie & @wcvendors,
The CHQ Payment gateway comes with WooCommerce (and not a external plugin).
In the link you (@WCVendors) shared above, please see under “Types of payment gateway” point #4 Offline – Cheque (this goes in the backend as CHQ), Bank Transfer.
Also further done in the link this;
“Cheque gives the order on-hold status since the payment cannot be verified automatically. If however you are building a direct gateway you can actually complete the order here instead. When an order is paid for, rather than using update_status you should us payment_complete:
$order->payment_complete(); “
The payment gateway that actually works (emails go through to vendor) for us is a custom plugin we made for our credit card provider.